valor/layouts/shortcodes/audio.html

<style>
    .media-container {
        width: 90%;
    }

    .audio-player {
        display: flex;
        flex-direction: row;
        width: 100%;
    }
    .audio-player p{
        width: fit-content;
    }

    .media-seek {
        width: 100%;
    }
</style>
<div class="media-container">
    <div class="audio-player">
        <audio onloadedmetadata="setup_audio_metadata(event)" ontimeupdate="setup_audio_metadata(event)">
            <source src='{{.Site.BaseURL}}{{.Get "src" }}'>
        </audio>
        <button onclick="toggle_play_audio(event)">Play</button>
        <input class="media-seek" type="range" onchange="update_audio_time(event)" value="0">
        <select onchange="update_audio_speed(event)">
            <option value="1" selected>1x</option>
            <option value="1.5">1.5x</option>
            <option value="2">2x</option>
            <option value="2.5">2.5x</option>
            <option value="3">3x</option>
        </select>
        <div class="audio-preview">
        </div>
        <p><span class="audio-currentTime"></span><span class="audio-duration"></span></p>
        <button onclick="toggle_loop_audio(event)">Loop</button>
        <script>
            function setup_audio_metadata(event) {
                audio = event.target;
                var seek = audio.parentElement.children[2];
                seek.min = 0;
                seek.max = audio.duration;
                seek.value = audio.currentTime;
                audio.parentElement.children[5].children[0].innerHTML = "" + timeToText(audio.currentTime) + "/";
                audio.parentElement.children[5].children[1].innerHTML = "" + timeToText(audio.duration);
            }
            function toggle_loop_audio(event) {
                audio = event.target.parentElement.children[0];
                audio.loop = !audio.loop;
            }
            function update_audio_time(event) {
                audio = event.target.parentElement.children[0];
                audio.currentTime = event.target.value;
            }
            function toggle_play_audio(event) {
                el = event.target;
                audio = event.target.parentElement.children[0];
                speed = el.parentElement.children[3].value;
                audio.playbackRate = speed;

                if (audio.paused) {
                    audio.play();
                    el.innerHTML = "Pause";
                }
                else {
                    audio.pause();
                    el.innerHTML = "Play"
                }
            }
            function update_audio_speed(event) {
                el = event.target;
                audio = event.target.parentElement.children[0];
                audio.playbackRate = el.value;

            }
            function timeToText(t) {
                hours = 0;
                minutes = 0;
                seconds = 0;
                if (t > 60 * 60) {
                    hours = Math.floor(t / 60 / 60);
                    t = t - hours * 60 * 60;
                }
                if (t > 60) {
                    minutes = Math.floor(t / 60);
                    t = t - minutes * 60

                }
                if (t > 1) {
                    seconds = Math.floor(t);
                }
                text = "";
                if (hours > 0) {
                    text += hours + ":";
                }
                if (minutes > 0 || hours > 0) {
                    if (minutes == 0) {
                        minutes = "00"
                    }
                    if (minutes < 10) {
                        text += "0"
                    }
                    text += minutes + ":"
                }
                if (seconds == 0 && (minutes > 0 || hours > 0)) {
                    seconds = "00";
                }
                if (seconds < 10) {
                    text += "0";
                }
                text += seconds
                return text;
            }
        </script>
    </div>
    <noscript>
        <style>
            .audio-player {
                display: none;
            }
        </style>
        <audio controls preload="false">
            <source src='{{.Site.BaseURL}}{{.Get "src" }}'>
        </audio>
    </noscript>
</div>